The new house we’ve moved into has three doors with deadbolt locks that can only be opened with a key on both sides: there is no knob on the inside. I’ve seen this before, but never lived with it. The locks are immediately adjacent to glass windows, either in the door itself or in the surrounding frame, so I assume that the rationale is to prevent someone from simply smashing the window and reaching in to unlock the door.
However, I have two problems with them: first is that, on a day-to-day basis, it is extremely inconvenient to have to find the key whenever you want to lock yourself in or let yourself out. Second is the safety risk: in the event of a fire or other serious emergency, the inability to find a key to let yourself out could be deadly.
IMHO, these two objections outweigh the security risk in our suburban neighborhood. So I’m inclined to replace the locks with conventional deadbolts with knobs. (The doorknobs also have locks, but I have never liked that kind: not very secure, and too easy to lock yourself out. I will probably replace them with un-keyed knobs.)
What say you?